| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: scrolbar.cpp |
| 3 | // Purpose: wxScrollBar |
| 4 | // Author: Julian Smart |
| 5 | // Modified by: |
| 6 | // Created: 17/09/98 |
| 7 | // RCS-ID: $Id$ |
| 8 | // Copyright: (c) Julian Smart |
| 9 | // Licence: wxWindows licence |
| 10 | ///////////////////////////////////////////////////////////////////////////// |
| 11 | |
| 12 | #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) |
| 13 | #pragma implementation "scrolbar.h" |
| 14 | #endif |
| 15 | |
| 16 | // For compilers that support precompilation, includes "wx.h". |
| 17 | #include "wx/wxprec.h" |
| 18 | |
| 19 | #include "wx/defs.h" |
| 20 | #include "wx/scrolbar.h" |
| 21 | |
| 22 | #ifdef __VMS__ |
| 23 | #pragma message disable nosimpint |
| 24 | #define XtDisplay XTDISPLAY |
| 25 | #endif |
| 26 | #include <Xm/Xm.h> |
| 27 | #include <Xm/ScrollBar.h> |
| 28 | #ifdef __VMS__ |
| 29 | #pragma message enable nosimpint |
| 30 | #endif |
| 31 | |
| 32 | #include "wx/motif/private.h" |
| 33 | |
| 34 | static void wxScrollBarCallback(Widget widget, XtPointer clientData, |
| 35 | XmScaleCallbackStruct *cbs); |
| 36 | |
| 37 | IMPLEMENT_DYNAMIC_CLASS(wxScrollBar, wxControl) |
| 38 | |
| 39 | // Scrollbar |
| 40 | bool wxScrollBar::Create(wxWindow *parent, wxWindowID id, |
| 41 | const wxPoint& pos, |
| 42 | const wxSize& size, long style, |
| 43 | const wxValidator& validator, |
| 44 | const wxString& name) |
| 45 | { |
| 46 | if( !CreateControl( parent, id, pos, size, style, validator, name ) ) |
| 47 | return false; |
| 48 | |
| 49 | wxSize newSize = |
| 50 | ( style & wxHORIZONTAL ) ? wxSize( 140, 16 ) : wxSize( 16, 140 ); |
| 51 | if( size.x != -1 ) newSize.x = size.x; |
| 52 | if( size.y != -1 ) newSize.y = size.y; |
| 53 | |
| 54 | Widget parentWidget = (Widget) parent->GetClientWidget(); |
| 55 | |
| 56 | m_mainWidget = |
| 57 | DoCreateScrollBar( (WXWidget)parentWidget, |
| 58 | (wxOrientation)(style & (wxHORIZONTAL|wxVERTICAL)), |
| 59 | (void (*)())wxScrollBarCallback ); |
| 60 | |
| 61 | AttachWidget (parent, m_mainWidget, (WXWidget) NULL, |
| 62 | pos.x, pos.y, newSize.x, newSize.y); |
| 63 | ChangeBackgroundColour(); |
| 64 | |
| 65 | return true; |
| 66 | } |
| 67 | |
| 68 | wxScrollBar::~wxScrollBar() |
| 69 | { |
| 70 | } |
| 71 | |
| 72 | void wxScrollBar::SetThumbPosition(int pos) |
| 73 | { |
| 74 | XtVaSetValues ((Widget) m_mainWidget, |
| 75 | XmNvalue, pos, |
| 76 | NULL); |
| 77 | } |
| 78 | |
| 79 | int wxScrollBar::GetThumbPosition() const |
| 80 | { |
| 81 | int pos; |
| 82 | XtVaGetValues((Widget) m_mainWidget, |
| 83 | XmNvalue, &pos, NULL); |
| 84 | return pos; |
| 85 | } |
| 86 | |
| 87 | void wxScrollBar::SetScrollbar(int position, int thumbSize, int range, int pageSize, |
| 88 | bool WXUNUSED(refresh)) |
| 89 | { |
| 90 | m_viewSize = pageSize; |
| 91 | m_pageSize = thumbSize; |
| 92 | m_objectSize = range; |
| 93 | |
| 94 | if (range == 0) |
| 95 | range = 1; |
| 96 | if (thumbSize == 0) |
| 97 | thumbSize = 1; |
| 98 | |
| 99 | XtVaSetValues((Widget) m_mainWidget, |
| 100 | XmNvalue, position, |
| 101 | XmNminimum, 0, |
| 102 | XmNmaximum, range, |
| 103 | XmNsliderSize, thumbSize, |
| 104 | XmNpageIncrement, pageSize, |
| 105 | NULL); |
| 106 | } |
| 107 | |
| 108 | void wxScrollBar::Command(wxCommandEvent& event) |
| 109 | { |
| 110 | SetThumbPosition(event.m_commandInt); |
| 111 | ProcessCommand(event); |
| 112 | } |
| 113 | |
| 114 | void wxScrollBar::ChangeFont(bool WXUNUSED(keepOriginalSize)) |
| 115 | { |
| 116 | // TODO |
| 117 | // Do anything for a scrollbar? A font will never be seen. |
| 118 | } |
| 119 | |
| 120 | void wxScrollBar::ChangeBackgroundColour() |
| 121 | { |
| 122 | wxWindow::ChangeBackgroundColour(); |
| 123 | |
| 124 | XtVaSetValues ((Widget) GetMainWidget(), |
| 125 | XmNtroughColor, m_backgroundColour.AllocColour(XtDisplay((Widget) GetMainWidget())), |
| 126 | NULL); |
| 127 | } |
| 128 | |
| 129 | static void wxScrollBarCallback(Widget widget, XtPointer clientData, |
| 130 | XmScaleCallbackStruct *cbs) |
| 131 | { |
| 132 | wxScrollBar *scrollBar = (wxScrollBar*)wxGetWindowFromTable(widget); |
| 133 | wxOrientation orientation = (wxOrientation)(int)clientData; |
| 134 | wxEventType eventType = wxEVT_NULL; |
| 135 | |
| 136 | switch (cbs->reason) |
| 137 | { |
| 138 | case XmCR_INCREMENT: |
| 139 | { |
| 140 | eventType = wxEVT_SCROLL_LINEDOWN; |
| 141 | break; |
| 142 | } |
| 143 | case XmCR_DECREMENT: |
| 144 | { |
| 145 | eventType = wxEVT_SCROLL_LINEUP; |
| 146 | break; |
| 147 | } |
| 148 | case XmCR_DRAG: |
| 149 | { |
| 150 | eventType = wxEVT_SCROLL_THUMBTRACK; |
| 151 | break; |
| 152 | } |
| 153 | case XmCR_VALUE_CHANGED: |
| 154 | { |
| 155 | eventType = wxEVT_SCROLL_THUMBRELEASE; |
| 156 | break; |
| 157 | } |
| 158 | case XmCR_PAGE_INCREMENT: |
| 159 | { |
| 160 | eventType = wxEVT_SCROLL_PAGEDOWN; |
| 161 | break; |
| 162 | } |
| 163 | case XmCR_PAGE_DECREMENT: |
| 164 | { |
| 165 | eventType = wxEVT_SCROLL_PAGEUP; |
| 166 | break; |
| 167 | } |
| 168 | case XmCR_TO_TOP: |
| 169 | { |
| 170 | eventType = wxEVT_SCROLL_TOP; |
| 171 | break; |
| 172 | } |
| 173 | case XmCR_TO_BOTTOM: |
| 174 | { |
| 175 | eventType = wxEVT_SCROLL_BOTTOM; |
| 176 | break; |
| 177 | } |
| 178 | default: |
| 179 | { |
| 180 | // Should never get here |
| 181 | wxFAIL_MSG("Unknown scroll event."); |
| 182 | break; |
| 183 | } |
| 184 | } |
| 185 | |
| 186 | wxScrollEvent event(eventType, scrollBar->GetId(), |
| 187 | cbs->value, orientation); |
| 188 | event.SetEventObject(scrollBar); |
| 189 | scrollBar->GetEventHandler()->ProcessEvent(event); |
| 190 | } |